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What is the full form of "MF"?
Correct Answer: B — Medium Frequency
Explanation:
Medium frequency (MF) is the designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is the medium wave (MW) AM broadcast band. The MF band is also known as the hectometer band as the wavelengths range from ten to one hectometer (1000 to 100 m).